BIOL 1002 REAL EXAM 2025 PRACTICE QUESTIONS

pg. 1

BIOL 1002 REAL EXAM 2025 PRACTICE QUESTIONS

AND CORRECT ANSWERS/ BIOLOGY 1002 LSU PREP

WITH 300 EXAM PRACTICE QUESTION S AND

CORRECT VERIFIED ANSWERS

Which of these binds to receptor molecules on the host cell membrane

a) a *glycoproteins: outer part-- looks like a plunger*

b) b *lipid bilayer envelope: outermost part of the virus*

c) c * reverse transcriptase: 2 yellow circles in the center of the virus*

d) d *core proteins: purple beads encasing where genetic material is held*

e) e *generic material- viral RNA- coated with proteins: looks like thick

squiggle pieces*

• a

(Glycoproteins on the viral envelope recognize and bind to receptors on the host cell)

The organism in the figure parasitizes *hint: type of virus with an octagon

shaped head*

• protists
• animals
• plants
• bacteria
• fungi
• bacteria
• / 4

pg. 2 Why is it that prokaryotic cells evolve more quickly than eukaryotic cells?

a) They are more susceptible to environmental factors than eukaryotic cells

b) They are more advanced than eukaryotic cells

c) Evolution prevents the extinction of the species

d) They are smaller than eukaryotic cells

e) Rapid reproduction provides additional opportunity for mutations that are

responsible for genetic variability

e) Rapid reproduction provides additional opportunity for mutations that are

responsible for genetic variability (bacteria can divide every 20 minutes)

nodules at the ends of plant roots are:

• carrying on photosynthesis

• protecting the plant from viroids

• intended to hold pathogenic bacteria

• intended to exchange genetic material between the plant and the bacteria

• converting nitrogen gas to a form usable by plants
• converting nitrogen gas to a form usable by plants

T/F:

Humans can eat live cultures of some bacteria without getting sick T Bacterial cell walls contain ________, which makes them different from other organisms.

• celluloses

b)starch

• chitin
• pectin
• peptidoglycan
• peptidoglycan 2 / 4

pg. 3

While examining a hot spring, you find something you haven't seen before. It has a cell membrane, but the cell wall lacks peptidoglycan. It contains both DNA and RNA. The DNA is circular. It would be classified as a(n)

• fungus
• archaea
• prion
• bacterium
• virus
• archaea

does archaea have peptidoglycan in their cell wall?no

• bacteria does)

T/F:

bacteria lack membrane-bound organelles T

T/F: bacteria are multicellular microbes

F The classification of bacteria has historically been based on

• microbial nutrition, physical appearance, and how they move
• pigments and presence of flagella
• nutrient requirements and pigments
• the appearance of colonies and rate of growth
• the means of locomotion and thickness of cell wall.
• microbial nutrition, physical appearance, and how they move

T/F:

Bacteria are able to increase their genetic variability by reproducing sexually F (asexual) What differentiates gram-positive bacteria from gram-negative bacteria?

• / 4

pg. 4

a) The appearance of colonies

b) The means of locomotion

c) Nutrient requirements

d) The use of oxygen

e) The way the cell wall stains

e) The way the cell wall stains

In which of these environments would you normally find prokaryotes?

a) A single drop of seawater

b) An animal's intestinal tract

c) A spoonful of soil

d) Human skin

e) All of the above

e) All of the above

In terms of abundance, which of the following is Earth's predominant form of life?

• prokaryotes
• plants
• reptiles
• archaea
• animals
• prokaryotes

What is a major difference between the domains, Bacteria and Archaea?

• the use of RNA polymerase for RNA synthesis
• the presence of a plasma membrane
• the use of ribosomes in protein synthesis

d) DNA as the genetic material

• peptidoglycan in the cell wall of bacteria but not the archaea
• peptidoglycan in the cell wall of bacteria but not the archaea

(Peptidoglycan is a polysaccharide that strengthens the cell wall of bacteria and is not found in archaea)

• / 4